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BVP Medical BVP Medical Solved Paper-2007

  • question_answer
    Escape velocity at surface of earth is 11.2 km/s. Escape velocity from a planet whose mass is the same as that of earth and radius 1/4 that of earth, is

    A)                 2.8 km/s                              

    B)                 15.6 km/s

    C)                 22.4 km/s                           

    D)                 44.8 km/s

    Correct Answer: C

    Solution :

                    At a certain velocity of projection the body will go out of the gravitational field. of the earth and will never return to the earth, this velocity is known as escape velocity \[=243Hz\] Given, \[f=\frac{v}{v+{{v}_{s}}}\,\,f\] \[=\frac{320}{320+4}\times 240\]             \[=237Hz\] \[=f-f=\]              \[\Rightarrow \]                 \[n=243-237=6\]


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